Nuclear in-medium effects on η dynamics in proton–nucleus collisions

• Published in: Nuclear science and techniques Vol. 27; no. 3; pp. 171 - 175
• Main Authors: Chen, Jie, Feng, Zhao-Qing, Wang, Jian-Song
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01.06.2016; Institute of Modern Physics, Chinese Academy of Sciences,Lanzhou 730000, China; Kavli Institute for Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China%Institute of Modern Physics, Chinese Academy of Sciences,Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100190,China%Institute of Modern Physics, Chinese Academy of Sciences,Lanzhou 730000, China
• Subjects: Energy; Hadrons; Heavy Ions; Nuclear Energy; Nuclear Physics; 动量分布; 吸引力; 吸收过程; 核反应; 核物质; 核碰撞; 质子; 量子分子动力学模型; LQMD model; In-medium effects; Production; Proton–nucleus collisions; η Production; Proton-nucleus collisions
• ISSN: 1001-8042; 2210-3147
• DOI: 10.1007/s41365-016-0069-7

The dynamics of the η meson produced in proton-induced nuclear reactions via the decay of N＊（1535）has been investigated within the Lanzhou quantum molecular dynamics transport model.The in-medium modifications of the η production in dense nuclear matter are included in the model,in which an attractive η-nucleon potential is implemented.The impact of the η optical potential on the η dynamics is investigated.It is found that the attractive potential leads to the reduction in high-momentum（kinetic energy） production from the spectra of momentum distributions and inclusive cross sections and increasing the reabsorption process by surrounding nucleons.